#include<iostream>
using namespace std;

void main04() {
	int a = 2;
	int b = a++;
	cout << "a=" << a << "   b=" << b << endl;
	int c = 2;
	int d = ++c;
	cout << "c=" << c << "   d=" << d << endl;

	int e = 2;
	int f = e--;
	cout << "e=" << e << "   f=" << f << endl;

	int m = 2;
	int n = --m;
	cout << "m=" << m << "   n=" << n << endl;
	

}